A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 26. CVE-2025-14174 was also issued in response to this report.
総合評価: CVE-2025-43529 は在野悪用が確認された重大脅威（93.6/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 8.44%、94 パーセンタイル） 根拠: CISA KEV に登録（追加日 2025-12-15）。Apple / Multiple Products が対象で、弱点分類 CWE-416の悪用が確認されています。未認証でリモート管理権限を奪取されるリスクが極めて高い。 推奨対応: CISA の対応期限を過ぎています。緊急のパッチ適用を最優先に検討してください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
: Apple Multiple Products Use-After-Free WebKit Vulnerability · CISA KEV の詳細
: 2025-12-15
: 2026-01-05
: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-23 | 8.00% | 8.44% | +0.44% |
| 2 | 2026-06-15 | 0.17% | 8.00% | +7.83% |
| 3 | 2026-05-12 | — | 0.17% | — |
EPSS の全履歴 （全 15 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
end-of-life | CVE-2025-43529 end-of-life priority: Debian including 2 source packages (webkit2gtk, wpewebkit), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 7, open 3. | https://security-tracker.debian.org/tracker/CVE-2025-43529 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2025-43529 |
suse
|
high | CVE-2025-43529 severity important: SUSE including 104 source package names (2.2.0-4.55:gpg2-2.4.4-slfo.1.1_2.1, 2.2.1-7.2:gpg2-2.4.4-slfo.1.1_2.1, …), 491 product×package rows across 71 product lines (Container suse/sl-micro/6.0/baremetal-os-container, Container suse/sl-micro/6.0/base-os-container, … (71 product lines)): Fixed 473, First Fixed 18. | https://www.suse.com/security/cve/CVE-2025-43529/ |
ubuntu
|
high | CVE-2025-43529 high priority: Ubuntu including 5 source packages (qtwebkit-opensource-src, qtwebkit-source, webkit2gtk, webkitgtk, wpewebkit), 36 status rows across 8 suites (bionic, focal, jammy, noble, plucky, questing, upstream, xenial): ignored 14, DNE 13, released 5, needs-triage 4. | https://ubuntu.com/security/CVE-2025-43529 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| apple | safari | < 26.2 | cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* |
| apple | ipados | < 18.7.3 | cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* |
| apple | ipados | >= 26.0, < 26.2 | cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* |
| apple | iphone_os | < 18.7.3 | cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* |
| apple | iphone_os | >= 26.0, < 26.2 | cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* |
| apple | macos | >= 26.0, < 26.2 | cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* |
| apple | tvos | < 26.2 | cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* |
| apple | visionos | < 26.2 | cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:* |
| apple | watchos | < 26.2 | cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://support.apple.com/en-us/125884 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/125885 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/125886 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/125889 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/125890 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/125891 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/125892 | Release Notes Vendor Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43529 | US Government Resource |